Unless the company is 100% liquidated, which would make financial sense to the new owners
I don't think you'd pay 10+ billion to then shut it down and sell off assets, (ie liquidate). The asset book value may be around 12 billion, but it would hardly reach that at a fire sale. I wonder what book value those 747 classics have?
QF will be used for cash flow, and cash flow used for purchases. Sell off some businesses like catering, holidays, terminals etc to fill the wallet and then go on a shopping spree for airlines, freight operators etc.
At the same time, continue to cut the core business costs (wages!) and increase outsourcing and pretty soon you'd have a giant of an efficient company.
It is not difficult to see QF double or treble in size in 1-2 years, with huge earnings to boot.
Then some time in the future, take it public again and realise a fortune.
All pretty simple really!